1123220220210 has 192 divisors, whose sum is σ = 3268509843456. Its totient is φ = 265265078400.

The previous prime is 1123220220193. The next prime is 1123220220299. The reversal of 1123220220210 is 120220223211.

1123220220210 is a `hidden beast` number, since 1 + 1 + 232 + 2 + 0 + 220 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16269865 + ... + 16338755.

It is an arithmetic number, because the mean of its divisors is an integer number (17023488768).

Almost surely, 2^{1123220220210} is an apocalyptic number.

1123220220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123220220210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1634254921728).

1123220220210 is an abundant number, since it is smaller than the sum of its proper divisors (2145289623246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123220220210 is a wasteful number, since it uses less digits than its factorization.

1123220220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69341 (or 69338 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1123220220210 its reverse (120220223211), we get a palindrome (1243440443421).

The spelling of 1123220220210 in words is "one trillion, one hundred twenty-three billion, two hundred twenty million, two hundred twenty thousand, two hundred ten".